Does A 2024 Lexus Rx350 Require Premium Gas Tank Size. Most 2024 and 2023 models require premium unleaded gas with an octane rating of 91 or higher. Detailed specs and features for the 2024 lexus rx 350 premium plus including dimensions, horsepower, engine, capacity, fuel economy, transmission, engine type, cylinders, drivetrain.

There are a few minor changes to the rx’s equipment and specifications. The 2024 lexus rx 350 gas tank sizes range between 17.2 and 17.8 gallons depending on the trim level and model options.